plunge
verb
plunged;
plunging
Definition of plunge
(Entry 1 of 2)
1
: to cause to penetrate or enter quickly and forcibly into something
plunged the dagger
2
: to cause to enter a state or course of action usually suddenly, unexpectedly, or violently
plunged the nation into economic depression
1
: to thrust or cast oneself into or as if into water
2a
: to become pitched or thrown headlong or violently forward and downward
also
: to move oneself in such a manner
plunged off the embankment
b
: to act with reckless haste : enter suddenly or unexpectedly
plunges into project after project
c
: to bet or gamble heavily and recklessly
3
: to descend or dip suddenly
the stock's value plunged